Several years ago I saw a video at an NCTM meeting about shortcuts and"tricks" in mathematics. It was intitled something like "Math Logic" or"Logical Math". If you have anything similar to that please let meknow. I a group of students interested in this. They are preparing fora math contest.Thanks,Kathy EskewMartin Middle SchoolMathematics Department700 Fowler RoadMartin, TN 38237Phone: 901-587-2346Fax : 901-588-0529E-mail: katheske@utm.edu